Dashboard / CVE-2025-11712

CVE-2025-11712

MEDIUM
MEDIUM Priority: 0.01 BB Relevance: 62/100
Published: 2025-10-14 Modified: 2026-10-23 First seen: 2026-10-29 Status: active

Attack Surface

Network Low Complexity No Auth Scope Change

CVSS Vector Breakdown

AV: Network
AC: Low
PR: None
UI: Required
S: Changed
C: Low
I: Low
A: None

Description

A malicious page could have used the type attribute of an OBJECT tag to override the default browser behavior when encountering a web resource served without a content-type. This could have contributed to an XSS on a site that unsafely serves files without a content-type header. This vulnerability was fixed in Firefox 144, Firefox ESR 140.4, Thunderbird 144, and Thunderbird 140.4.

Weakness Classification (1)

Affected Software (3)

VendorProductVersion
mozilla firefox < 140.4.0
mozilla firefox < 144.0
mozilla thunderbird < 140.4.0

References & Advisories (7)

https://bugzilla.mozilla.org/show_bug.cgi?id=1979536
Issue Tracking Permissions Required

Bug Bounty Relevance

62 / 100
✓ Network accessible
✓ No authentication
✓ Low complexity

CVSS Score

6.1 / 10.0 v3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

EPSS — Exploitation Probability

0.22%
Raw Score 0.002210
Percentile 12.7%
Date 2026-10-29

EPSS Trend

2026-10-29
0.00221
2026-10-28
0.00221

Intelligence Sources

nvd ref →

External Links